TW201434243A - Motor bobbin - Google Patents

Abstract

Provided is a motor bobbin around which a winding wire is wound, said motor bobbin comprising insulating paper and a resin moulded body. The insulating paper and the resin moulded body are coupled and fixed together without using an adhesive agent. Surfaces of the insulating paper which are in contact with the resin moulded body are configured using aramid paper comprising an aramid fibrid and aramid short fibres. Resin is melt extruded and thermal-fusion bonded upon the aramid paper comprising the aramid fibrid and the aramid short fibres, and the surfaces configured from the aramid paper are surface treated to obtain the insulating paper. The motor bobbin is obtained by bringing melted portions of the resin moulded body into contact with the top of the aramid paper.

Description

Winding spool for motor

The present invention relates to a bobbin for a motor, and more particularly to a bobbin for a motor, for example, in a motor stator or the like of a motor generator constituting a hybrid electric vehicle or an electric vehicle, A core material such as a magnetic core winding wire is embedded in a state in which a winding is wound.

In a hybrid electric vehicle or an electric vehicle, a motor generator having a selective function of an electric motor and a generator is mounted. Such a motor generator includes, for example, a cylindrical rotor fixed to and supported by an output shaft rotatable about an axis; and a motor stator having an inner circumference with a predetermined gap interposed with respect to an outer peripheral surface of the rotor a motor housing that houses the motor stator. The motor stator constituting such a motor generator is generally composed of a core material and a winding wire. In order to insulate the core material from the winding wire, the winding wire is wound around the winding bobbin for the motor, and the winding wire is wound. The spool is embedded in the core material. In the past, as the winding bobbin for the motor, it is generally composed of synthetic resin. For example, in the case of a concentrated winding stator, polyphenylene sulfide or the like is used (for example, refer to JP-A-2005-102454 Bulletin and Japanese Patent Laid-Open Publication No. 2002-142399.

However, in the case where the bobbin is composed of the synthetic resin, the lower limit of the thickness of the bobbin is about 0.6 mm, which does not necessarily correspond to the trend of increasing efficiency, high output, and miniaturization of the motor generators in recent years. . High-efficiency and high-output spools for motor generators must meet the following four characteristics: 1) Thin (low thickness); 2) It can prevent grounding fault of coiled wire and core material (high withstand voltage, partial discharge resistance); 3) can withstand heat generation (heat resistance) of coiled wire; 4) has mechanical strength.

In particular, the low thickness means that the thinned portion can increase the amount of the winding wire, increase the winding factor, and can be outputted high, and is considered to be an extremely important characteristic.

An object of the present invention is to provide a bobbin for a motor that can withstand high efficiency and high output of a motor generator or the like.

In view of the above, the inventors of the present invention have conducted detailed studies to develop a bobbin for a motor that can withstand high efficiency and high output of a motor generator, and the like.

In a first aspect, the present invention provides a winding bobbin for a motor wound with a winding wire, which is composed of an insulating paper and a resin molded body, wherein the insulating paper and the resin molded body are not bonded. The surface of the insulating paper that is in contact with the resin molded body is composed of amide paper, which is composed of melamine fibrids and guanamine short fibers; the insulating paper is The resin is melted and pressed onto a ruthenium paper composed of melamine fibrids and guanamine short fibers, and thermally fused, and then surface-treated with a surface composed of guanamine paper; and a resin molded body is obtained. The molten portion is contacted with the amide paper to form the bobbin.

In a second aspect, the present invention provides a bobbin for a motor as in the first aspect, further comprising: a bobbin body portion, at least a portion of which is the insulating paper.

In a third aspect, the present invention provides a roll for a motor as in the first aspect The bobbin further includes a pair of resin molded bodies connected to both ends of the bobbin main body portion.

In a fourth aspect, the invention provides a bobbin for a motor as in the first aspect, wherein the surface treatment is a plasma surface treatment.

In a fifth aspect, the present invention provides a bobbin for a motor according to a first aspect, wherein a surface of the insulating paper in contact with the resin molded body is immersed in a resin molded body

In a sixth aspect, the present invention provides a bobbin for a motor as in the first aspect, wherein the resin molded body has a groove for determining the position of the winding.

In a seventh aspect, the present invention provides a method for manufacturing a bobbin for a motor according to a first aspect, which simultaneously performs bonding with an insulating paper when molding a resin molded body.

In an eighth aspect, the present invention provides a motor using a stator assembled with a core material and a winding wire, wherein the winding wire is wound around a winding bobbin for a motor in any one of the first to sixth aspects on.

In a ninth aspect, the present invention provides a motor generator using a stator assembled with a core material and a winding wire, wherein the winding wire is wound around any one of the first to sixth aspects for a motor On the spool.

In a tenth aspect, the present invention provides a generator using a stator assembled with a core material and a winding wire, wherein the winding wire is wound around a winding wire for a motor in any one of the first to sixth aspects On the shaft.

1‧‧‧Rolling spool for motor

2‧‧‧Rolling spool body

4‧‧‧Resin molded body

6‧‧‧ central part

6a‧‧‧Outside

8‧‧‧Bend

8a‧‧‧Outside

10‧‧‧ Body Department

10a‧‧‧ side

10b‧‧‧ side

10c‧‧‧back

12‧‧‧檐

12a‧‧‧Protruding

12b‧‧‧ inside side

14‧‧‧ trench

16‧‧‧ Protrusion

18‧‧‧ recess

The first figure is a perspective view of a bobbin for a motor in an embodiment of the present invention.

The second drawing is a perspective view of the bent insulating paper in the bobbin for the motor of the first figure.

The third drawing is a perspective view of a resin molded body in the bobbin for the motor of the first drawing.

The fourth figure shows a perspective view of the configuration of the winding bobbin for the motor in the first figure when assembled with the stator core.

Hereinafter, a bobbin for a motor according to a preferred embodiment of the present invention will be described in detail with reference to the drawings, but the present invention is not particularly limited to the embodiment. The first figure is a perspective view of a bobbin 1 for a motor in accordance with a preferred embodiment of the present invention.

The bobbin 1 for a motor includes: a bobbin body 2 having a section of " And a pair of resin molded bodies 4 are attached to both ends of the bobbin main body 2.

As shown in the perspective view of the second figure, that is, the bobbin main body 2, the bobbin main body 2 is formed by bending the both side edge portions of the rectangular insulating paper in the same direction at substantially right angles, so that the cross section is formed. The shape has a central portion 6 and a pair of bent portions 8, 8 located at both side edges.

As shown in the perspective view of the resin molded body 4, the resin molded body 4 includes a main body portion 10 having a rectangular parallelepiped shape, and a pair of weir portions 12 and 12 provided at both ends of the main body portion 10. In the spool 1 for a motor of the present embodiment, the body portion 10 and the pair of flange portions 12, 12 are integrally formed. Each of the crotch portions 12 has the same shape, and the distal end side portion of the crotch portion 12 forms a protruding portion 12a that protrudes from the main body portion 10. As a result, the resin molded body 4 has substantially " Shape of the section. Next, in the resin molded body 4, the inner side surface 12b of the protruding portion 12a of each of the flange portions 12 and the side surface 10a of the main body portion 10 in the protruding direction of the protruding portion 12a are formed to have three faces surrounded and have a rectangular cross section. space. The interval between the inner side faces 12b of the projections 12a of the pair of crotch portions 12 is approximately equal to the width of the central portion 6 of the bobbin main body 2.

Each of the resin molded bodies 4 is connected to both ends of the bobbin main body 2 in the longitudinal direction. In detail, the profile is " The bobbin main body 2 of the shape, the both ends of the outer side surface 6a of the center portion 6 are joined to the side surface 10a of the main body portion 10 of the resin molded body 4, and the outer side surface 8a of each bent portion 8 and the resin molded body 4 are The inner side faces 12b of the protruding portions 12a are joined, thereby being joined and fixed to the respective resin molded bodies 4.

The joint portion of the spool main body 2 and each of the resin molded bodies 4 can be connected to each of the resin molded bodies 4 without passing through a binder. Further, the surface of the bobbin main body 2 joined to the resin molded body 4 is composed of a ruthenium paper which is composed of a guanamine fibrid and a guanamine short fiber. Further, the insulating paper is obtained by melting a resin onto a ruthenium paper composed of a melamine fibril and a guanamine short fiber, and thermally fusion, and then surface-treating the surface composed of amide paper. It.

In the bobbin 1 for a motor of the present embodiment, in the main body portion 10 of each of the resin molded bodies 4, a plurality of outwardly extending side faces 10b are formed in the horizontal direction for determining the position of the winding. Trench 14.

As shown in the fourth embodiment, in the bobbin 1 for a motor of the present embodiment, the projection 16 is formed on the back surface 10c of the main body portion 10 of the resin molded body 4 on one side, and the main body portion of the resin molded body 4 on the other side is formed. A recess 18 is formed in the back surface 10c of 10. The projections 16 and the recesses 18 are used in a configuration in which a pair of bobbins 1 for a motor are disposed apart from each other in a configuration as shown in the fourth figure, and are disposed in the pair for the motor. The stator core between the bobbins is connected to the bobbin 1 for the motor.

(guanamine)

In the present invention, guanamine refers to a linear polymer compound (aromatic polyamine) in which 60% or more of a guanamine bond is directly bonded to an aromatic ring. Examples of such guanamines include poly(phenylene isophthalamide) and copolymers thereof, polyparaphenylene phthalamide and copolymers thereof, and poly(p-phenylene)-copolymerization (3,4). '-Diphenyl ether) to guanamine and the like. These guanamines can be industrially produced by, for example, a conventional interfacial polymerization method using a isophthalic acid chloride or m-phenylenediamine, a solution polymerization method, or the like, and can be used as a commercial product. Acquired, but is not limited to this. Among these decylamines, poly(m-phenylene phthalamide) is preferably used from the viewpoint of having characteristics such as good moldability, thermal adhesiveness, flame retardancy, and heat resistance.

(melamine fiber strip)

In the present invention, the guanamine fibrids are paper-like melamine granules, which are also known as melamine pulps (see Japanese Patent Publication No. Sho 35-11851, Japanese Patent Publication No. Sho 37-5732, etc.).

The guanamine fibrids are known to be decomposed and beaten in the same manner as ordinary wood pulp, and are used as a raw material for papermaking; so-called beating treatment for the purpose of maintaining the quality suitable for papermaking can be carried out. The beating treatment can be carried out by a disk refining device, a beating device, and other papermaking material processing equipment capable of exerting a mechanical cutting action. In this operation, the morphology of the fibrids is changed and can be monitored by the freeness test prescribed by Japanese Industrial Standards (JIS) P8121. In the present invention, the freeness of the guanamine fibrid after the beating treatment is preferably in the range of 10 cm ³ to 300 cm ³ (Canada standard freeness (JISP8121)). In the fibrids having a freeness greater than the range, there is a possibility that the strength of the lysine paper formed in the subsequent step is lowered. On the other hand, if a degree of freeness smaller than 10 cm ³ is to be obtained, there are many cases where the use efficiency of the input mechanical power is small and the amount of processing per unit time is small, and further, because of the sliver body Excessive miniaturization tends to reduce the so-called "adhesive function". Therefore, even if a freeness of less than 10 cm ³ is obtained as such, it is not considered to have a particular advantage.

(melamine short fiber)

In the case of the fiber, the "TEIJIN CONEX (registered trademark)" of Teijin Co., Ltd. and the "NOMEX (registered trademark) of DuPont" are listed as the fiber. Etc., but not limited to this.

The length of the guanamine short fibers can be generally selected from the range of 1 mm or more and less than 50 mm, and is preferably selected from the range of 2 to 10 mm. When the length of the short fibers is less than 1 mm, the mechanical properties of the sheet material are lowered. On the other hand, when the polyamide paper is produced by a wet method at 50 mm or more, "tangling" and "winding into bundles" are likely to occur. It is easy to be the cause of defects.

(amide paper)

In the present invention, the guanamine paper is a sheet mainly composed of the guanamine fibrid and the guanamine short fibers, and generally has a thickness in the range of 20 μm to 1000 μm. Further, the guanamine paper generally has a basis weight in the range of 10 g/m ² to 1000 g/m ² . Here, the guanamine fibrid and the guanamine short fiber may be mixed in any ratio, but it is more preferable to make the ratio (mass ratio) of the guanamine fibrid/melamine short fiber 1/9 to 9/1, more preferably It is 2/8~8/2, but it is not limited to this range.

The guanamine paper is generally produced by a method in which the above guanamine fibrids and guanamine short fibers are mixed and then flaky. Specifically, for example, a method in which the above-described guanamine fibrids and guanamine short fibers are dry-mixed and then formed into a sheet by a gas flow; and the guanamine fibrids and the guanamine short fibers are dispersed and mixed in a liquid medium; a method of discharging to a support having a liquid permeability (for example, a mesh or a belt) to exfoliate it, removing the liquid to dry it, and the like; among the methods, it is preferred to use water A general term for wet manufacturing of media.

In the wet manufacturing method, a general method is to supply an aqueous slurry containing at least a single or a mixture of guanamine fibrids and guanamine short fibers to a paper machine to disperse, and then perform dehydration, squeezing and drying operations. It is wound as a sheet. A paper machine can be used as a paper machine by using a Fourdrinier paper machine, a cylinder paper machine, a tilt type paper machine, and a hybrid paper machine in which the devices are combined. In the case of manufacturing in a mixed paper machine, the slurry sheets having different blending ratios can be formed and integrated to obtain a composite sheet formed of a plurality of paper layers. At the time of manufacture, an additive such as a dispersibility enhancer, an antifoaming agent, a paper strength enhancer or the like may be used depending on the demand.

The guanamine paper obtained by the above method is hot-pressed at a high temperature and a high pressure between a pair of rolls, whereby the density and mechanical strength can be improved. For example, in the case of using a metal drum, the conditions of hot pressing are exemplified by a temperature of 100 to 400 ° C and a linear pressure of 50 to 400 kg/cm, but the invention is not limited thereto. A plurality of polyamide papers may also be stacked during hot pressing. The above hot press processing can also be performed multiple times in any order.

(Insulating paper)

In the present invention, among the insulating papers, at least the surface on the side where the insulating paper and the resin molded body are joined is composed of guanamine paper, and the guanamine paper is made of guanamine fibrid and guanamine short fibers. The structure is equivalent to the insulating paper obtained by surface-treating the "insulating paper which melts the resin and presses it on the amide paper and heat-fused it." As the resin, polyethylene terephthalate, polyethylene naphthalate, polyimide, polytetrafluoroethylene, polyphenylene sulfide, polyamine, semi-aromatic polyamine, A polymer such as a phenoxy group, or a mixture or alloy of the polymers, but is not limited thereto.

The number of stacked layers of the guanamine paper layer and the resin layer can be appropriately selected according to the purpose and purpose of the stacked body. However, if at least one surface layer is a guanamine paper layer, the slidability is improved. In the motor, for example, it is preferable that the bobbin is easily inserted between the core material and the winding wire of the motor stator, that is, between the slots of the core material. A double-layered stacked sheet of a polymer and a guanamine paper as described in JP-A-2006-321183, which is composed of an aromatic polyamide resin and an epoxy group-containing phenoxy resin. It is composed of an epoxy group in the molecule, and the ratio of the epoxy group-containing phenoxy resin is 30 to 50% by mass; or a three-layer stacked sheet is made of guanamine paper, the polymer and ruthenium. The amine paper is formed; however, it is not limited thereto.

The thickness of the stacked body can be appropriately selected in accordance with the use and purpose of the stacked body, and any thickness can be selected as long as there is no problem in workability such as bending or winding. Generally, the thickness is preferably in the range of 50 μm to 1000 μm from the viewpoint of workability, but is not limited thereto.

(surface treatment)

The surface treatment in the present invention may, for example, be a plasma surface treatment, a corona discharge surface treatment, a surface treatment by liquid impregnation, or the like. By performing such surface treatment, the surface energy of the surface of the insulating paper is increased, and the interface energy with the resin molded body is lowered, and as a result, the adhesion to the resin molded body is improved. From the standpoint of ease of handling, it is particularly desirable to use a plasma surface treatment.

(plasma surface treatment)

The plasma surface treatment in the present invention refers to a treatment performed by applying a high voltage of direct current or alternating current between electrodes to initiate continuous discharge, exposing the treated substrate to, for example, corona at atmospheric pressure. Discharge or glow discharge in vacuum. In this case, although it is not particularly limited, it is preferably a treatment performed in a vacuum in which the treatment gas is widely selected. The processing gas is not particularly limited, but gases such as helium (He), neon (Ne), argon (Ar), nitrogen, oxygen, carbonic acid gas, air, water vapor, or the like may be used alone. Used in a mixed state. Among them, from the viewpoint of discharge initiation efficiency, argon (Ar) or carbonic acid gas is preferred. Processing pressure Although the force is not particularly limited, from the viewpoint of the treatment efficiency, it is preferred to perform a glow discharge treatment for sustain discharge in a pressure range of 0.1 Pa to 1330 Pa, that is, a so-called low-temperature plasma treatment. More preferably in the range of 1 Pa to 266 Pa.

In the present invention, more specifically, by making the composition ratio of the oxygen atom (O) to the carbon atom (C) on the surface of the guanamine paper X (O/C), it is 120% or more of the theoretical value, 250%. In the following ranges, good thermal fusion properties are obtained for the purpose. Here, the composition ratio X(O/C) refers to an atom which determines the number of carbon atoms (C) and the number of oxygen atoms (O) on the surface of the guanamine paper by X-ray photoelectron spectroscopy (XPS; X-rays Photoelectron Spectroscopy). Number ratio (measured value). In addition, the theoretical value refers to the value of the atomic ratio calculated from the repeating unit of the polymer chemical structural formula in the resin composition constituting the resin.

For example, in the case of NOMEX (registered trademark) paper, C/O/N=14/2/2 among the poly(phenylene phthalamide) as a main component, if based on carbon (C) Then, the theoretical ratio of the composition ratio X (O/C) of the number of carbon atoms (C) to the number of oxygen atoms (O) is 2/14 = 0.143. In general, in order to cause a trace amount of a hydrocarbon-based substance to adhere to a surface, the measured value is smaller than the theoretical value. If the composition ratio X (O/C) is in the range of 120% or more and 250% or less of the theoretical value, that is, in the range of 120% to 150%, which is larger than the theoretical value, good thermal fusion can be obtained. . It is preferably in the range of 150% or more and 230% or less. If the composition ratio X is less than 120% of the theoretical value, good thermal fusion properties cannot be obtained. Moreover, in the case where it exceeds 250% of the theoretical value, good thermal fusion property cannot be obtained.

Further, as a method of obtaining the guanamine paper having the composition ratio X (O/C) in the above range, for example, the surface of the guanamine paper obtained by the above method is subjected to a low-temperature plasma processing apparatus. Low temperature plasma treatment method, etc. Thereby, a ruthenium paper having good heat fusion properties can be obtained.

At this time, in the case of low-temperature plasma treatment of the ruthenium paper using the internal electrode type plasma processing device, the treatment intensity (output) of the low-temperature plasma treatment should be 30 W. Min/m ² ~1500W. The range of min/m ² . Thereby, the composition ratio X (O/C) of the surface of the amide paper can be made within the range of the above composition ratio X (O/C). In the case where the strength of the low-temperature plasma treatment is lower than the above range, the composition ratio X becomes small, and in the case where the strength of the low-temperature plasma treatment is higher than the above range, the composition ratio X becomes large, and neither of them can be obtained. Good thermal integration. More preferably 130W. Min/m ² ~1200W. The range of min/m ² .

(resin molded body)

In the present invention, the resin molding system represents a molded body produced by a melt injection molding method in which the following polymer or mixture is placed in a molten state in a predetermined mold and cooled. Then demoulding: for example, polyphenylene sulfide resin (PPS resin), acrylonitrile. Butadiene. a styrene copolymer resin, a polyamidene resin, a polyethylene terephthalate resin, a polyacetal resin, a polyamide amine 6 containing a guanamine bond, a polyamide 66, a polyamide 612, a polymer of polyamine 11, polyamine 12, copolymerized polyamine, polyamidamine MXD6, polyamidamide 46, methoxymethylated polyamine, semi-aromatic polyamide, or the like; or A polymer containing a polyamide resin composition shown in JP-A-2006-321951 or a mixture thereof; or a mixture of the above polymer and an inorganic material such as glass fiber. In particular, a molded article of a mixture of a semi-aromatic polyamide and a glass fiber is preferred because of its high heat resistance. Examples of the mixture include, for example, ZYTEL (registered trademark) HTN51G and 52G of DuPont, but are not limited thereto.

In the portion where the resin molded body is in contact with the winding wire, a groove for determining the position of the winding wire is formed, the position of the winding wire can be stabilized, and the high precision of winding the winding wire can be achieved, and the efficiency of the motor generator and the like can be improved. Therefore, it is better.

(Manufacturing method for the winding bobbin of the motor)

The insulating paper which is subjected to the surface treatment of the plasma in advance is disposed in the mold so that at least a portion of the surface treated by the plasma is in contact with the molten portion of the resin formed body, whereby at least the insulating paper can be overcharged The surface portion of the surface treatment of the slurry is immersed in the molten polymer. In such a manner, the bobbin for the motor in which the portion of the resin molded body is bonded to the insulating paper can be joined and fixed at the same time when the resin molded body is produced without using a binder. Further, by using the ruthenium paper for the body portion, the body portion can be thinned, and the winding factor and thermal conductivity can be improved. The bobbin for a motor of the present invention can be used as a motor, a motor generator, a generator, or the like after being mounted as a stator after winding a core material and winding the wire.

The invention is illustrated by the following examples. In addition, these examples are for exemplifying the contents of the present invention, and are not intended to limit the scope of the present invention.

[Examples]

(Measurement methods)

(1) Measurement of basis weight and thickness

According to JIS C2300-2.

(2) Calculation of density

Calculated by basis weight ÷ thickness.

(3) Adhesiveness

The adhesive portion of the insulating paper and the resin molded body was visually observed.

(4) Appearance of the insulating paper portion

It is visually judged that the portion of the insulating paper is warped due to heat during molding.

(Reference example)

(raw material modulation)

A sliver of poly(phenylene isophthalamide) is produced by using a pulp granule manufacturing apparatus (wet precipitator) comprising a combination of a stator and a rotor described in JP-A-52-15621. body. This was treated with a decomposition apparatus, a beating apparatus, and the weighted average of the fiber lengths was adjusted to 0.9 mm. The obtained guanamine fibrids had a freeness of 90 cm ³ .

On the other hand, methyl amide fiber (NOMEX (registered trademark), single-strand fineness 2 Danny) manufactured by DuPont was cut into a length of 6 mm (hereinafter referred to as "melamine short fiber").

(Manufacture of guanamine paper)

The prepared guanamine fibrids and guanamine short fibers are separately dispersed in water and slurried. The slurry was mixed so that the blending ratio (weight ratio) of the fibrids and the polyamide short fibers was 1/1, and a sheet was produced by a TAPPI type hand-made papermaking apparatus (cross-sectional area: 625 cm ² ). Subsequently, this was hot-pressed under the conditions of a temperature of 330 ° C and a linear pressure of 300 kg/cm using a metal calender roll to obtain a guanamine paper shown in Tables 1 and 2.

(Manufacture of insulating paper)

The above-described guanamine paper and a semi-aromatic polyamide resin composition containing 50% by weight of a phenoxy resin having an epoxy group are used in the method described in paragraph [0024] of JP-A-2006-321183 ( JP-A-2006-321183, the blending example 6), obtained in Examples 1 and 2 of Table 1, and the insulating paper containing the guanamine paper shown in Comparative Examples 1 and 2 of Table 2, and the insulating paper, It is formed of a three-layer structure of "amide paper/resin composition/protonium paper" (weight ratio 37/54/37) in which a guanamine paper is disposed outside.

(Examples 1 and 2)

(Manufacture of insulating paper that has been subjected to plasma surface treatment)

The insulating paper shown in Table 1 was passed through the internal electrode type low-temperature plasma processing apparatus described in the first drawing of Japanese Patent No. 4607826, and the surface of either side thereof was treated with a treatment strength of 650 W. Min/m ² , low temperature plasma treatment. At this time, the composition ratio X (O/C) of the number of atoms of the oxygen atom (O) to the carbon atom (C) on the surface of the insulating paper is 206% of the theoretical value of the atomic ratio.

(for the manufacture of the winding bobbin of the motor)

Using the above-mentioned insulating paper which has been subjected to plasma surface treatment, and polyphenylene sulfide (FORTRON (registered trademark) 1140A64) manufactured by Polyplastics Co., Ltd. as a polymer, and insert molding was carried out under the conditions shown in Table 1, The spool for the motor. The main characteristic values of the bobbin for a motor obtained in this manner are shown in Table 1.

It is considered that the bobbin for the motor of the embodiment is formed of insulating paper because the main body of the bobbin is small in thickness, and it is expected to achieve high efficiency by the high density of the winding wire; Since the molded articles are sufficiently connected and fixed, the insulating paper is not warped, so that the adhesion to the core material is high, so that an extremely high dielectric breakdown voltage can be expected. Further, the amide paper used is Since the heat resistance of the polymer is high, it is possible to sufficiently withstand the heat generation of the winding wire. From the above viewpoint, it is useful as a winding bobbin for a motor that can withstand high efficiency and high output of a motor generator or the like.

(Comparative examples 1 to 6)

(Manufacture of insulating paper)

The polyamide paper and the polyethylene terephthalate film (S28 #16, thickness: 16 μm) manufactured by Toray Industries Co., Ltd. were bonded together with an adhesive to obtain a guanamine paper as shown in Comparative Examples 3 to 6 of Table 2. The insulating paper is formed of a three-layer structure of "amide paper/polyethylene terephthalate film/amide paper" (weight ratio 37/24/37) in which the guanamine paper is disposed outside.

(Manufacture of insulating paper that has been subjected to plasma surface treatment)

The insulating papers shown in Comparative Examples 5 and 6 of Table 2 were passed through the internal electrode type low-temperature plasma processing apparatus described in the first drawing of Japanese Patent No. 4607826, and the treatment strength was applied to the surface of either side thereof. 650W. Min/m ² , low temperature plasma treatment. At this time, the composition ratio X (O/C) of the number of atoms of the oxygen atom (O) to the carbon atom (C) on the surface of the insulating paper is 206% of the theoretical value of the atomic ratio.

(for the manufacture of the winding bobbin of the motor)

Insertion molding (Insert Molding) was carried out under the conditions shown in Table 2 using the above-mentioned insulating paper and polyphenylene sulfide (FORTRON (registered trademark) 1140A64) manufactured by Polyplastics Co., Ltd. as a polymer, thereby obtaining a motor for use. Winding spool. The main characteristic values of the bobbin for the motor obtained in this manner are shown in Table 2.

The bobbins for motors of Comparative Examples 1 to 4 have a portion where the insulating paper is not immersed in the resin, and a portion having a gap between the insulating paper and the resin molded body can be visually confirmed. I think this is because when it is used in a motor or the like, partial discharge occurs, and a part of the gap becomes thick, Therefore, the efficiency of the coiled wire is reduced, and the efficiency is lowered, and it is a cause of the obstacle when the core material is embedded. Therefore, it is considered that it is not suitable for high efficiency and high output of a motor generator or the like. Motor spools. Further, in the winding bobbins for motors of Comparative Examples 3 to 6, since the ruthenium paper was stacked with the film, the film portion was warped due to shrinkage. The warp is reduced in adhesion to the core material, and there is a possibility that the dielectric breakdown voltage is lowered. Furthermore, it is considered that the warpage is a cause of the obstacle when the core material is embedded, and therefore it is considered that it is not suitable as a winding wire for a motor that can withstand high efficiency and high output of a motor generator or the like. axis.

As described above, in general, when the film is stretched, the resin molded body for the bobbin of the motor is produced by the melt injection molding method, and the main body of the bobbin of the insulating paper is connected and fixed. Causes relaxation, shrinkage, and deformation of insulation paper.

1‧‧‧Rolling spool for motor

2‧‧‧Rolling spool body

4‧‧‧Resin molded body

8‧‧‧Bend

8a‧‧‧Outside

10‧‧‧ Body Department

10a‧‧‧ side

12‧‧‧檐

12a‧‧‧Protruding

12b‧‧‧ inside side

14‧‧‧ trench

Claims (10)

A winding bobbin for a motor, which is wound with a winding wire, the winding bobbin is composed of an insulating paper and a resin molded body, wherein: the insulating paper and the resin molded body are connected and fixed without using an adhesive; the insulation The surface of the paper which is in contact with the resin molded body is composed of a ruthenium paper which is composed of a ruthenium fibril strip and a ruthenium amide short fiber; the insulating paper is obtained by melting the resin and And the surface of the amide paper formed by the amide paper and the amide paper is thermally fused, and the surface formed by the amide paper is surface-treated; and the resin is formed. The molten portion of the body contacts the amide paper to form the bobbin. The winding bobbin for a motor of claim 1, further comprising: a bobbin body portion, at least a portion of which is the insulating paper. A winding bobbin for a motor according to the first aspect of the invention, further comprising: a pair of resin molded bodies connected to both ends of the bobbin main body portion. The winding bobbin for a motor of claim 1, wherein the surface treatment is a plasma surface treatment. A winding bobbin for a motor according to the first aspect of the invention, wherein the surface of the insulating paper in contact with the resin molded body is immersed in a resin molded body. A winding bobbin for a motor according to the third aspect of the invention, wherein the resin molded body has a groove for determining a winding position. A method for producing a bobbin for a motor according to the first aspect of the invention, wherein the resin molded body is molded and bonded to the insulating paper. A motor using a stator assembled with a core material and a winding wire, wherein the winding wire is wound around a bobbin for a motor of any one of claims 1 to 6. A motor generator using a stator in which a core material and a winding wire are assembled, wherein the winding wire is wound around a bobbin for a motor of any one of claims 1 to 6. A generator using a stator assembled with a core material and a winding wire, wherein the winding wire is wound around a bobbin for a motor of any one of claims 1 to 6.